CN109824591A - 一种3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法 - Google Patents
一种3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法 Download PDFInfo
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- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 title claims abstract description 40
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000010189 synthetic method Methods 0.000 title claims abstract description 12
- -1 allyl alkene Chemical class 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- CIISBNCSMVCNIP-UHFFFAOYSA-N cyclopentane-1,2-dione Chemical compound O=C1CCCC1=O CIISBNCSMVCNIP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000000376 reactant Substances 0.000 claims abstract 3
- 150000003839 salts Chemical class 0.000 claims abstract 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
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- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 2
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- AJFDBNQQDYLMJN-UHFFFAOYSA-N n,n-diethylacetamide Chemical compound CCN(CC)C(C)=O AJFDBNQQDYLMJN-UHFFFAOYSA-N 0.000 claims 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims 2
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 claims 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 1
- 235000011054 acetic acid Nutrition 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 239000001099 ammonium carbonate Substances 0.000 claims 1
- 235000012501 ammonium carbonate Nutrition 0.000 claims 1
- 235000019270 ammonium chloride Nutrition 0.000 claims 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims 1
- 235000011130 ammonium sulphate Nutrition 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims 1
- 229910000027 potassium carbonate Inorganic materials 0.000 claims 1
- 229910000029 sodium carbonate Inorganic materials 0.000 claims 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims 1
- 239000012312 sodium hydride Substances 0.000 claims 1
- 229910000104 sodium hydride Inorganic materials 0.000 claims 1
- PNGLEYLFMHGIQO-UHFFFAOYSA-M sodium;3-(n-ethyl-3-methoxyanilino)-2-hydroxypropane-1-sulfonate;dihydrate Chemical compound O.O.[Na+].[O-]S(=O)(=O)CC(O)CN(CC)C1=CC=CC(OC)=C1 PNGLEYLFMHGIQO-UHFFFAOYSA-M 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- KRNSYSYRLQDHDK-UHFFFAOYSA-N 6,7-dihydro-5h-cyclopenta[b]pyridine Chemical compound C1=CN=C2CCCC2=C1 KRNSYSYRLQDHDK-UHFFFAOYSA-N 0.000 description 2
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 2
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- 229940043376 ammonium acetate Drugs 0.000 description 2
- 235000019257 ammonium acetate Nutrition 0.000 description 2
- KVJHGPAAOUGYJX-UHFFFAOYSA-N 1,1,3,3-tetraethoxypropane Chemical compound CCOC(OCC)CC(OCC)OCC KVJHGPAAOUGYJX-UHFFFAOYSA-N 0.000 description 1
- IBIDQDPPONSSPQ-UHFFFAOYSA-N 1-imino-2H-thiadiazine Chemical compound N=S1NN=CC=C1 IBIDQDPPONSSPQ-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- LSROXAYPMFICCA-UHFFFAOYSA-N 3-aminocyclopent-2-en-1-one Chemical compound NC1=CC(=O)CC1 LSROXAYPMFICCA-UHFFFAOYSA-N 0.000 description 1
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
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- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
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- Pyridine Compounds (AREA)
Abstract
本发明提供了一种3‑氯‑6,7‑二氢‑5H‑环戊并[b]吡啶‑5‑酮的合成方法。本发明属于医药化学合成领域。本发明以环戊二酮2为原料,与商业化的(Z)‑N‑[2‑氯‑3‑(二甲氨基)烯丙基烯]‑N‑甲基甲胺六氟磷酸盐反应得到中间体3,中间体3在催化剂催化下环化得到产品1,本发明反应条步骤少、操作简便,收率高,并且容易进行放大生产。
Description
技术领域:
本发明本发明涉及一种医药中间体的合成方法,具体而言,本发明涉及一种3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法。
技术背景
3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮在WO2016/118404中用做合成iminothiadiazine dioxide类化合物的中间体。
但是专利WO2016/118404没有报道合成3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的方法,也没有其它文献报道3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法。6,7-dihydro-5H-cyclopenta[b]pyridin-5-one类化合物主要是通过以下几种方法来合成:
1.环戊二酮与丙二醛缩二乙醇反应得到:
2.6,7-dihydro-5H-cyclopenta[b]pyridine的氧化得到:
3.3-aminocyclopent-2-enone与丙炔醛的反应得到:
以上方法的收率均较低,且没有办法引入3-位的氯取代,得到3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮。
因此,需要开发一个3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法。
发明内容
本发明公开了一种3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法,本发明以环戊二酮2为原料,与商业化的(Z)-N-[2-氯-3-(二甲氨基)烯丙基烯]-N-甲基甲胺六氟磷酸盐反应得到中间体3,中间体3在催化剂催化下环化得到产品3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮1,其合成路线为:
1.在一优选的实施方案中,在所述步骤(1)中,所用的溶剂选自四氢呋喃;所用的反应温度是45℃;所用的碱选自叔丁醇钾和DABCO。
2.在一优选的实施方案中,在所述步骤(2)中,所用的溶剂选自甲基叔丁醚;所用的反应温度是70℃~75℃;催化剂选用的醋酸铵。
3.本发明的要点在于:提供一种3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法。
4.本发明的优势是:本发明反应条步骤少、操作简便,收率高,并且容易进行放大生产。
下面通过实施例对本发明作进一步的描述,本领域的技术人员应理解,所举实例只用于解释本发明,并非用于限定本发明的范围。
具体实施例方案
实施例:3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成
1.中间体3的合成
将化合物2(9.8克,100mmol)悬浮于0℃的干燥THF(200毫升)中,滴加20重量%的T-BuOK溶液在THF中(66毫升,105毫摩尔,1.05当量)。在室温下搅拌45分钟,将(Z)-N-[2-氯-3-(二甲氨基)烯丙基烯]-N-甲基甲胺六氟磷酸盐(46g,150mmolL)和DABCO(11.2g,100mmolL)加入反应混合物中。将所得混合物在45℃搅拌3小时,然后减压浓缩,得到的产品不经提纯,直接用于下一步。
2. 3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮1的合成
将上步得到油状物溶于200毫升甲基叔丁基醚中,然后将乙酸铵(15.5克,100毫摩尔)加入到上述溶液中。将得到的溶液加热回流6小时并在减压下浓缩。得到化合物1,为淡黄色固体(13.9克,收率83%)。1HNMR(400MHz,DMSO-D6):δ8.91(S,1H),8.45(S,1H),3.22(t,2H),2.42(t,2H)。
本发明不限于上述实例。以上所述仅为本发明的实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (4)
1.3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法,以本发明以环戊二酮2为原料,与商业化的(Z)-N-[2-氯-3-(二甲氨基)烯丙基烯]-N-甲基甲胺六氟磷酸盐反应得到中间体3,中间体3在催化剂催化下环化得到产品3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮1,其合成路线为:
2.根据权利要求1所述的3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法,所述合成方法包括如下步骤:
(1)以环戊二酮2为原料,与商业化的(Z)-N-[2-氯-3-(二甲氨基)烯丙基烯]-N-甲基甲胺六氟磷酸盐反应得到中间体3;
(2)中间体3在催化剂催化下环化得到产品3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮1。
3.根据权利要求2所述的3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法,其特征在于:在所述步骤(1)中所用的溶剂选自水,甲醇、乙醇、正丙醇、异丙醇、乙酸乙酯、四氢呋喃、二氯甲烷、甲苯、邻二甲苯、对二甲苯、间二甲苯、N,N-二乙基甲酰胺、N,N-二乙基乙酰胺中的一种或几种的混合物;所用的反应温度是0℃~溶剂的回流温度;所用的碱选自氢氧化钠,氢氧化钾,氢化钠,叔丁醇钾,叔丁醇钠,甲醇钠,乙醇钠,碳酸钾,碳酸钠,DABCO(1,4-二氮杂二环[2.2.2]辛烷),DBU(1,8-二氮杂二环十一碳-7-烯)中的一种或几种的混合物。
4.根据权利要求2所述的3-氯-6,7-二氢-5H-环戊并[b]吡啶-5-酮的合成方法,其特征在于:在所述步骤(2)中,所用的催化剂选自氯化铵,硫酸铵,碳酸铵,醋酸镂,硝酸铵,磷酸铵中的一种或几种的混合物;所用的溶剂选自水,甲醇、乙醇、正丙醇、异丙醇、乙酸乙酯、四氢呋喃、甲基叔丁基醚,二氯甲烷、甲苯、邻二甲苯、对二甲苯、间二甲苯、N,N-二乙基甲酰胺、N,N-二乙基乙酰胺中的一种或几种的混合物;所用的反应温度是0℃~溶剂的回流温度。
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